3/14/2012 Temperature and Release Summary for Shasta and Trinity - February 2012

(Updated twice a week November through April)

Sacramento River Water Temperatures in Degrees F

Day Collected from CDEC (California Data Exchange Center) in CFS

Control

TCD SHD minus Point Shasta Spring Crk 

Wt. TCD 6/1 to 2/29 Generation Powerplant 

Avg. (Diff) Shd Spp Kwk Bsf Jlf Bnd Rdb Lws Ccr Igo El 815 Release 

Jan 50.7 50.0 46.5 49.6 48.4 48.1 47.9 47.8 42.0 49.5 44.5 4,268 91 

Feb

1 49.1 (0.6) 48.5 45.6 48.8 49.3 49.3 49.2 49.2 42.8 49.3 44.5 3,671 47 

2 49.1 (0.5) 48.6 45.6 48.8 48.8 48.8 48.9 49.5 42.7 49.0 43.9 3,614 47 3 49.3 (0.6) 48.7 45.5 48.7 48.4 48.2 48.1 48.5 42.4 48.9 43.6 3,529 47 4 49.1 (0.5) 48.6 45.4 48.5 48.2 48.0 48.0 48.3 42.2 48.6 43.4 3,190 47 5 49.1 (0.6) 48.5 45.6 48.5 48.2 48.0 47.9 48.2 42.4 48.7 43.5 3,272 47 6 49.0 (0.5) 48.5 45.6 48.5 48.1 48.0 47.9 48.2 42.7 48.5 43.5 3,271 47 7 49.0 (0.5) 48.5 45.6 48.5 48.4 48.3 48.2 48.3 43.6 48.5 44.0 2,338 47 8 48.9 (0.6) 48.3 45.4 48.5 49.4 49.5 49.5 49.6 44.8 49.4 45.1 3,236 47 9 48.9 (0.7) ? 48.2 45.3 48.6 49.7 50.0 50.2 50.7 45.0 49.3 44.7 3,421 47 

10 48.8 (0.8) ? 48.0 45.0 48.6 49.7 50.1 50.3 50.6 45.3 49.1 44.7 4,138 830 11 48.7 (0.4) 48.3 45.0 48.2 49.9 50.3 50.5 50.9 45.6 49.3 45.1 2,760 881 12 48.7 (0.5) 48.2 45.2 48.0 48.7 49.2 49.5 50.3 45.1 48.2 44.1 2,985 771 13 48.8 (0.5) 48.3 45.4 47.9 49.0 49.2 49.2 49.4 45.4 48.6 44.9 3,198 631 14 48.8 (0.5) 48.3 45.4 47.8 48.5 48.8 49.0 49.6 45.8 48.3 44.3 3,173 775 15 48.9 (0.5) 48.4 45.5 47.7 48.0 48.2 48.3 48.7 44.8 47.9 44.1 3,428 876 16 48.9 (0.5) 48.4 45.5 47.7 48.1 48.2 48.2 48.4 45.0 48.1 44.3 3,007 692 17 48.7 (0.3) 48.4 45.6 47.8 48.6 48.9 48.9 49.1 45.5 48.4 44.9 2,610 722 18 48.6 0.0 ? 48.6 45.6 47.9 48.6 49.0 49.2 49.5 45.3 48.1 44.7 2,666 702 19 48.7 (0.6) ? 48.1 45.7 47.8 48.2 48.4 48.4 49.0 45.0 48.2 44.5 3,278 492 20 48.6 (0.3) ? 48.3 45.7 47.8 48.3 48.6 48.8 49.0 45.6 48.1 44.9 3,278 770 

21 48 6 48 2 45 7 47 8 48 7 48 9 48 9 49 2 46 0 48 4 45 5 3 168 780 

Mean Daily Releas

21 48.6 (0.4) ? 48.2 45.7 47.8 48.7 48.9 48.9 49.2 46.0 48.4 45.5 3,168 780 

22 48.6 (0.5) ? 48.1 45.9 47.9 49.7 50.3 50.5 50.9 46.7 48.6 46.1 3,375 779 23 48.9 (0.5) ? 48.4 46.1 48.2 49.3 49.8 50.1 50.9 46.3 48.8 45.9 4,267 1,196 24 49.0 (0.5) ? 48.5 46.2 47.9 49.6 50.0 50.1 50.5 46.0 48.9 45.9 3,796 1,197 25 48.6 (0.4) ? 48.2 46.3 48.1 49.1 49.6 49.9 50.5 45.6 48.4 45.5 3,339 1,257 26 48.9 (0.8) ? 48.1 46.1 48.0 47.6 47.9 48.1 48.7 45.3 47.7 45.3 3,486 1,222 27 48.9 (0.5) ? 48.4 46.0 47.7 47.9 47.8 47.6 47.6 45.0 48.0 45.8 3,378 1,227 28 48.5 (0.5) 48.0 45.9 47.4 47.5 47.8 47.9 48.0 44.2 47.2 45.2 2,686 1,140 29 48.1 (0.7) ? 47.4 45.9 47.5 47.1 47.2 47.2 47.5 43.9 47.5 45.7 3,401 1,060 

0.00.0

Avg 48.8 48.3 45.6 48.1 48.6 48.8 48.9 49.3 44.7 48.5 44.7 3,274 635 Tot cfs 94,959 18,423 Tot af 188,351 36,542 

# = Station out of service ^ - estimated (7 hours or less available) ? = Avg. includes estimated data! = 17 hours or less of readings & = 18 to 23 hours of reading ND = No hourly readings or incorrect 

Control Point: Balls Ferry 3/1/2011 to 5/31/2011; Jelly's Ferry 6/1/2011 to 2/29/2012NOTE: On 7/19/2011 the probe for SHD was extended farther out into the river so at low flows

 it should no longer be exposed to the air. 8/2/2011 the extended pipe floated away.  Some hourly readings for SHD are questionable again and are being estimated.